Invention Grant
- Patent Title: Ceramic powder and multi-layer ceramic capacitor
- Patent Title (中): 陶瓷粉末和多层陶瓷电容器
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Application No.: US14714107Application Date: 2015-05-15
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Publication No.: US09536667B2Publication Date: 2017-01-03
- Inventor: Youichi Mizuno
- Applicant: TAIYO YUDEN CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: TAIYO YUDEN CO., LTD.
- Current Assignee: TAIYO YUDEN CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Law Office of Katsuhiro Arai
- Priority: JP2012-080788 20120330
- Main IPC: H01G4/00
- IPC: H01G4/00 ; H01G4/12 ; H01G4/30 ; C04B35/468 ; B32B18/00 ; C01G23/00 ; B82Y30/00

Abstract:
A multi-layer ceramic capacitor is made by alternately layering a dielectric layer constituted by a sintered body of a ceramic powder, and an internal electrode layer. The ceramic powder contains, as a main composition, barium titanate powder having a perovskite structure with a median size of 200 nm or smaller as measured by SEM observation, wherein the barium titanate powder is such that the percentage of barium titanate particle having twin defects in the barium titanate powder is less than 10% as measured by TEM observation and that its crystal lattice c/a is 1.0075 or more.
Public/Granted literature
- US20150255214A1 CERAMIC POWDER AND MULTI-LAYER CERAMIC CAPACITOR Public/Granted day:2015-09-10
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